package code;


 
import java.io.File;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.WordUtils;
import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;

import c.x.jy.common.exception.RRException;
import c.x.jy.common.utils.DateUtils;
import code.entity.ColumnEntity;
import code.entity.TableEntity;

/**
 * 代码生成器   工具类
 * 
 */
public class GenUtils {

    private static String currentTableName;
    
    private static Configuration config;

    public static List<String> getTemplates() {
        List<String> templates = new ArrayList<String>();
        templates.add("template/Entity.java.vm");
        templates.add("template/Dao.xml.vm");

      //  templates.add("template/menu.sql.vm");

        templates.add("template/Service.java.vm");
        templates.add("template/ServiceImpl.java.vm");
        templates.add("template/Controller.java.vm");
        templates.add("template/Dao.java.vm");

      /* templates.add("template/index.vue.vm");
        templates.add("template/add-or-update.vue.vm");*/
        templates.add("template/list.html.vm");
        templates.add("template/form.html.vm");
        
		/*
		 * if (MongoManager.isMongo()) { // mongo不需要mapper、sql 实体类需要替换
		 * templates.remove(0); templates.remove(1); templates.remove(2);
		 * templates.add("template/MongoEntity.java.vm"); }
		 */
        return templates;
    }

    public static List<String> getMongoChildTemplates() {
        List<String> templates = new ArrayList<String>();
        templates.add("template/MongoChildrenEntity.java.vm");
        return templates;
    }

    /**
     * 生成代码
     */
    public static void generatorCode(Map  table,  List<Map<String, String>> columns ) {
        //配置信息
        Configuration config = getConfig();
        boolean hasBigDecimal = false;
        boolean hasList = false;
        //表信息
        TableEntity tableEntity = new TableEntity();
        tableEntity.setTableName((String)table.get("tableName"));
        tableEntity.setComments((String)table.get("tableComment"));
        //表名转换成Java类名
        String className = tableToJava(tableEntity.getTableName(), config.getStringArray("tablePrefix"));
        tableEntity.setClassName(className);
        tableEntity.setClassname(StringUtils.uncapitalize(className));

        //列信息
        List<ColumnEntity> columsList = new ArrayList<>();
        for (Map<String, String> column : columns) {
            ColumnEntity columnEntity = new ColumnEntity();
            columnEntity.setColumnName(column.get("columnName"));
            columnEntity.setDataType(column.get("dataType"));
            columnEntity.setComments(column.get("comments"));
            columnEntity.setExtra(column.get("extra"));

            //列名转换成Java属性名
            String attrName = columnToJava(columnEntity.getColumnName());
            columnEntity.setAttrName(attrName);
            columnEntity.setAttrname(StringUtils.uncapitalize(attrName));

            //列的数据类型，转换成Java类型
            String attrType = config.getString(columnEntity.getDataType(), columnToJava(columnEntity.getDataType()));
            columnEntity.setAttrType(attrType);


            if (!hasBigDecimal && attrType.equals("BigDecimal")) {
                hasBigDecimal = true;
            }
            if (!hasList && "array".equals(columnEntity.getExtra())) {
                hasList = true;
            }
            //是否主键
            if ("PRI".equalsIgnoreCase(column.get("columnKey")) && tableEntity.getPk() == null) {
                tableEntity.setPk(columnEntity);
            }

            columsList.add(columnEntity);
        }
        tableEntity.setColumns(columsList);

        //没主键，则第一个字段为主键
        if (tableEntity.getPk() == null) {
            tableEntity.setPk(tableEntity.getColumns().get(0));
        }

        //设置velocity资源加载器
        Properties prop = new Properties();
        prop.put("file.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
        Velocity.init(prop);
        String mainPath = config.getString("mainPath");
        mainPath = StringUtils.isBlank(mainPath) ? "" : mainPath;
   
        //封装模板数据
        Map<String, Object> map = new HashMap<>();
        map.put("tableName", tableEntity.getTableName());
        map.put("comments", tableEntity.getComments());
        map.put("pk", tableEntity.getPk());
        map.put("className", tableEntity.getClassName());
        map.put("classname", tableEntity.getClassname());
        map.put("pathName", tableEntity.getClassname().toLowerCase());
        map.put("columns", tableEntity.getColumns());
        map.put("hasBigDecimal", hasBigDecimal);
        map.put("hasList", hasList);
        map.put("mainPath", mainPath);
        map.put("package", config.getString("package"));
        map.put("moduleName", config.getString("moduleName"));
        map.put("author", config.getString("author"));
        map.put("email", config.getString("email"));
        map.put("controllerPage", config.getString("controllerPage"));
        map.put("datetime", DateUtils.format(new Date(), DateUtils.DATE_TIME_PATTERN));
        
        map.put("daoPage", config.getString("daoPage"));
        map.put("daorPath", config.getString("daorPath"));
        map.put("servicePath", config.getString("servicePath"));
        VelocityContext context = new VelocityContext(map);

        //获取模板列表
        List<String> templates = getTemplates();
        for (String template : templates) {
         
            //渲染模板
            StringWriter sw = new StringWriter();
            Template tpl = Velocity.getTemplate(template, "UTF-8");
            tpl.merge(context, sw);
        
            try {
            	
            	FileUtil.writeTxtFile(sw.toString(),  getFileName(template, tableEntity.getClassName(), config.getString("servicePackage"), config.getString("moduleName")));
           
      
                IOUtils.closeQuietly(sw);
   
            } catch (Exception e) {
                throw new RRException("渲染模板失败，表名：" + tableEntity.getTableName(), e);
            }
        }
    }

    /**
     * 列名转换成Java属性名
     */
    public static String columnToJava(String columnName) {
        return WordUtils.capitalizeFully(columnName, new char[]{'_'}).replace("_", "");
    }

    /**
     * 表名转换成Java类名
     */
    public static String tableToJava(String tableName, String[] tablePrefixArray) {
        if (null != tablePrefixArray && tablePrefixArray.length > 0) {
            for (String tablePrefix : tablePrefixArray) {
                tableName = tableName.replace(tablePrefix, "");
            }
        }
        return columnToJava(tableName);
    }

    /**
     * 获取配置信息
     */
    public static Configuration getConfig() {
        try {
        	if(config==null)  config=  new PropertiesConfiguration("generator.properties");
        } catch (Exception e) {
        	e.printStackTrace();
            throw new RRException("获取配置文件失败，", e);
        }
		return config;
    }

    /**
     * 获取文件名
     */
    public static String getFileName(String template, String className, String packageName, String moduleName) {
    	 String basePath=System.getProperty("user.dir");
 
        basePath=basePath.replace(File.separator+config.getString("servicePath"),"");
    	 String packagePath="";
    	if(template.contains("Controller.java.vm")||template.contains("vue.vm")||template.contains("html.vm")) {
    		if(!config.getBoolean("createController"))return null;
    		basePath=basePath+File.separator+config.getString("controllerPath")+File.separator;
    		packageName=config.getString("controllerPage");
    	}else if(template.contains("Dao.java.vm")||template.contains("Entity.java.vm")||template.contains("Dao.xml.vm")) {
 
    		basePath=basePath+File.separator+config.getString("daorPath")+File.separator;
    		packageName=config.getString("daoPage");
    	}else {
     	//	basePath=System.getProperty("user.dir")+File.separator;
            basePath=basePath+File.separator+config.getString("servicePath")+File.separator;
    	}
    	   packagePath =basePath+ "src"+File.separator+"main" + File.separator + "java" + File.separator;
    	   if (StringUtils.isNotBlank(packageName)) {
               packagePath += packageName.replace(".", File.separator) + File.separator ;
           }
        if (template.contains("MongoChildrenEntity.java.vm")) {
            return packagePath + "entity" + File.separator + "inner" + File.separator + currentTableName+ File.separator + splitInnerName(className)+ "InnerEntity.java";
        }
        if (template.contains("Entity.java.vm") || template.contains("MongoEntity.java.vm")) {
            return packagePath + "entity" + File.separator + className + "Entity.java";
        }

        if (template.contains("Dao.java.vm")) {
            return packagePath + "dao" + File.separator + className + "Dao.java";
        }

        if (template.contains("Service.java.vm")) {
            return packagePath + "service" + File.separator + className + "Service.java";
        }

        if (template.contains("ServiceImpl.java.vm")) {
            return packagePath + "service" + File.separator + "impl" + File.separator + className + "ServiceImpl.java";
        }

        if (template.contains("Controller.java.vm")&&config.getBoolean("createController")) {
   
            return packagePath + "controller" + File.separator + className + "Controller.java";
        }

        if (template.contains("Dao.xml.vm")) {
        //    return System.getProperty("user.dir")+File.separator+ "src"+File.separator+"main" + File.separator + "resources" + File.separator + "mapper" + File.separator + moduleName + File.separator + className + "Dao.xml";
        	return basePath + "src"+File.separator+"main" + File.separator + "resources" + File.separator + "mapper" + File.separator + moduleName + File.separator + className + "Dao.xml";
        }

        if (template.contains("menu.sql.vm")) {
            return className.toLowerCase() + "_menu.sql";
        }

        if (template.contains("index.vue.vm")&&config.getBoolean("createController")) {
            return basePath+ "src"+File.separator+"main" + File.separator + "resources" + File.separator + "static" + File.separator + "views" + File.separator + "modules" +
                    File.separator + moduleName + File.separator + className.toLowerCase() + ".vue";
        }

        if (template.contains("add-or-update.vue.vm")&&config.getBoolean("createController")) {
            return basePath+"src"+File.separator+"main" + File.separator + "resources" + File.separator + "static" + File.separator + "views" + File.separator + "modules" +
                    File.separator + moduleName + File.separator + className.toLowerCase() + "-add-or-update.vue";
        }

        if (template.contains("list.html.vm")&&config.getBoolean("createController")) {
            return basePath+"src"+File.separator+"main" + File.separator + "resources" + File.separator + "static" + File.separator + "pages"  +
                    File.separator + moduleName + File.separator + className.toLowerCase() + ".html";
        }
        if (template.contains("form.html.vm")&&config.getBoolean("createController")) {
            return basePath+"src"+File.separator+"main" + File.separator + "resources" + File.separator + "static" + File.separator + "pages"  +
                    File.separator + moduleName + File.separator + className.toLowerCase() + "_form.html";
        }
        
        return null;
    }

    private static String splitInnerName(String name){
          name = name.replaceAll("\\.","_");
          return name;
    }
}
